"I guess not... though I think they must have rushed to the top. I don't see any bodies around here." Or smell them - not that he can smell much underwater. He's not a shark, he's not adapted for underwater.

Caught by surprise... "Either they hit a rock or something hit them. That was a pretty big hole we swam through..."

But what could hit them that hard? Some creatures, maybe... but he has no real idea what sort of monsters lurk out here, other than the ones that came to shore a bit ago.